ISL61851FIBZ-T

Programmable Features:	--
Base Part Number:	ISL6185
Feature Pins:	/EN1, /EN2, /FLT1, /FLT2
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Current - Supply:	50µA
Operating Temperature:	-40°C ~ 85°C
Current - Output (Max):	600mA
Voltage - Supply:	2.3 V ~ 5.5 V
Series:	--
Features:	Auto Retry, Fault Timeout, Thermal Limit, Turn On Voltage, UVLO
Applications:	USB
Internal Switch(s):	Yes
Number of Channels:	2
Type:	Hot Swap Controller
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction
The ISL61851FIBZ-T is a hot-swap controller, which provides mid-range load and fault protection of an electronic circuit when connected with an external power supply and an auxiliary power input. It is designed to dissipate very high inrush currents and protect downstream electronic components. The ISL61851FIBZ-T is capable of providing a 95V continuous supply, protected with a 95V under-voltage lockout, and can operate in temperatures up to 125°C, ensuring a high level of reliability in a wide array of applications. Application Field
The ISL61851FIBZ-T is a hot-swap controller that can be utilized in a variety of applications where high-power density, mid-range load, and fault protection are required. Such applications include servers and storage systems, industrial automation systems, power supplies, enterprise and telecommunications rack solutions, DIN-rail power supply solutions, and high-power density motor applications.Features
The ISL61851FIBZ-T is designed to provide a vast array of different functionalities and features. The following provides a brief description of the device’s key features, which make it suitable for many different applications. One of the key features of the ISL61851FIBZ-T is its load current monitoring with adjustable overcurrent reset voltage and current trip. This feature allows the device to monitor the load current and adjust the system accordingly by controlling the reset voltage. Additionally, the device provides adjustable current limiting and over-temperature protection. This feature helps to ensure that the protected load will not be damaged by experiencing high currents or temperatures.The device also features an ON/OFF control, which enables the user to quickly and easily turn ON and OFF the system. This feature is especially useful for applications where remote power ON/OFF control is desired. The ISL61851FIBZ-T also features undervoltage and overvoltage protection, which helps to ensure that the system will not experience unexpected shutdowns due to unexpected power failures or failures in the external power supply. Additionally, the device has adjustable soft-start time, which helps to provide smoother power up transitions and minimize any inrush current at the time of a system restart. Finally, the ISL61851FIBZ-T is designed with a high thermal design, allowing the device to operate over a wide range of temperatures, up to 125°C. Working Principle
The ISL61851FIBZ-T hot-swap controller works on the principle of overcurrent and overvoltage protection. This principle involves the device monitoring the load current and the voltage supplied to the load. When the current exceeds the desired level, the device will immediately shut down the system to protect it from any potential hazardous events. Similarly, when the voltage exceeds the desired level, the device will immediately shut down the system for the same reason. In order to ensure that the system does not experience any unexpected shutdowns due to power failures or any other external causes, the device also monitors the voltage supplied to the load and will shut down the system if it drops below the desired level. The device also works on the principle of adjustable soft-start time. This feature helps to provide smoother transitions when the system is restarted in order to minimize any inrush current at the time of system start-up.The ISL61851FIBZ-T is also equipped with an ON/OFF control, which enables the user to quickly and easily turn OFF and ON the system. In addition to this, the device features adjustable current limiting and over-temperature protection, which ensure the system is functioning within the desired temperature range, and can limit the current passing through it if the system begins to draw too much power. Conclusion
The ISL61851FIBZ-T is a hot-swap controller that provides mid-range load and fault protection for a wide variety of applications. The device features adjustable overcurrent reset voltage and current trip, adjustable current limiting, over-temperature protection, adjustable soft-start time, an ON/OFF control, and undervoltage and overvoltage protection. It is designed to operate within a wide range of temperatures, up to 125°C, and is designed with a high thermal design. The ISL61851FIBZ-T works on the principle of overcurrent and overvoltage protection, as well as adjustable soft-start time, in order to ensure that the protected load will not be damaged by experiencing high currents or temperatures, and that the system will not experience unexpected shutdowns due to external power failures or other problems.

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